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Mid-Pliocene Asian monsoon intensification and the onset of Northern Hemisphere glaciation
| Content Provider | Semantic Scholar |
|---|---|
| Author | Zhang, Yi Ge Ji, Junfeng Balsam, William L. Liu, Lianwen Chen, Jianli |
| Copyright Year | 2009 |
| Abstract | The late Pliocene onset of major Northern Hemisphere glaciation (NHG) is one of the most important steps in the Cenozoic global cooling. Although most attempts have been focused on high-latitude climate feedbacks, no consensus has been reached in explaining the forcing mechanism of this dramatic climate change. Here we present a key low-latitude climate record, the high-resolution Asian monsoon precipitation variability for the past fi ve million years, reconstructed from South China Sea sediments. Our results, with supporting evidence from other records, indicate signifi cant mid-Pliocene Asian monsoon intensifi cation, preceding the initiation of NHG at ca. 2.7 Ma ago. This 1.4-million-year-long monsoon intensifi cation probably enhanced monsoon-induced Asian continental erosion and chemical weathering and in the process left fi ngerprints in marine calcium isotopes. Furthermore, increased rock weathering and/or organic carbon burial probably lowered the contemporary atmospheric CO 2 and may have triggered the NHG onset. |
| Starting Page | 599 |
| Ending Page | 602 |
| Page Count | 4 |
| File Format | PDF HTM / HTML |
| DOI | 10.1130/G25670A.1 |
| Volume Number | 37 |
| Alternate Webpage(s) | http://people.earth.yale.edu/sites/default/files/files/Zhang%20Y/YZZhangYG_Geology_2009.pdf |
| Alternate Webpage(s) | https://doi.org/10.1130/G25670A.1 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
